Handheld vacuum cleaner



FIG. 1 is a top, rear and left side perspective view of a handheld vacuum cleaner showing my new design;

FIG. 2 is a bottom and right side perspective view thereof;

FIG. 3 is a front elevation view thereof, shown enlarged in scale;

FIG. 4 is a rear elevation view thereof, shown enlarged in scale;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines are for the purpose of illustrating portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a handheld vacuum cleaner, as shown and described. 